Brake.



No. 703,835. Patented July I,- I902.

\I. BOYLE.

BRAKE.

(Application filed Nov. 13, 1899.)

(N0 Model.)

UNITED STATES;

PATENT OFFICE.

VERNON RQYLE, OF PATERSON, NEW JERSEY.

SPECIFICATION forming' part of Letters Patent No. 703,835, dated. July1, 1902.

Application filed November 13, 1899. Serial No. 736,835. (No model.)

To all whom it Weary concern. I

Be it known that I, VERNONRQYLE, a citi-. zen of the United States, andaresident of Paterson, in the county of Passaic and State ofNew Jersey,have invented a new and useful Improvement in Brakes, of which thefollowing is a specification.

My invention relates to an improvementin machines for punching jacquardcards, and more particularly to that type of machine shown, described,and claimed in United States Patent No. 644,871, granted me March 6,1900, in which the mechanism for feeding the cards and operating thepunches is thrown into and out of action by clutching a driveshaft to acontinuously-driven pulley.

My present improvement is directed to means for promptly arresting therotary movement of the shaft when the clutch is released.

In the accompanying drawings, Figure 1 is a view in front elevation ofso much of the machine as will suffice to illustrate a practicalembodiment of my invention. Fig. 2 is a View of the same in sideelevation, partlyin section. Fig. 3 is a view in detail showing theclutch in the position which it assumes when the shaft is locked to thedrive-pulley, and Fig. 4 is a similar view showing the position whichthe clutch assumes when the shaft is released from the drive-pulley.

The supporting-frame is denoted by A and may be of any well-known orapproved form suitable for supporting the different operatingmechanisms. Near its base a drive-shat t B is mounted in an elongatedbearing 1) and is connected at its front end by means of suitable camsand eccentrics with pitm'an G, for operating the punches and a rod D foroperating the escapement which controls the feed.

On the rear-end of the shaft B a drivepulleyEis loosely mounted and isdriven from a suitable source of power. (Not shown.) The pulley E isclutched to and'released from the shaft B by means of a pair of pedals FF, which operate a clutching mechanism as follows: A pair of'clutching-shoes(denoted by G G) have a radially-sliding connectionwitha supporting-plate g, fixed to rotate with the shaft B, and areconnected by toggle-dogs g g with a hub 1), free to rock on the shaft B.The hub Z) has radiating therefrom arms 12 b the free ends of which areconnected by springs H H with the opposite ends of the supporting-plateg, as at h h. The tension of the springs H H is such that when permittedto act they will rock the huh 1) into the position shown in Fig. 3, withthe toggledogs g g in radial lines to throw the clutchshoes G G intoengagement with the rim of the drive-pulley E, and hence cause the shaft13, tovwhich the supporting-plate g is fixed, to rotate, together withthe drive-pulley E. The huh I) is, however, positively rocked in theoppositedirection againstthe tension of the springs HH by means of arocking dog I, carried by the supporting-frame g and arranged to'beforced against a third arm b extending from the hub 12', by theengagement of one arm of the dog I with a nose 7:; on a sleeve K,arranged to he slid along the bearingb into and out of a position toengage and operatethe dog I. The sleeve K is slid by means of a shortlink it, connected with the downwardly-extended arm k of atribrake-wheel M and fixed to rotate with the shaft B, the opposite endof the strap or band brakeL being fixed to the supporting-plate g bymeans of a screw-threaded bolt m, provided with a nut m for adjustingthe brake relatively to the 'periphery of the brake-wheel. By thisarrangement whenever the sleeve Kis drawn out of engagement with the dogI and the springs H H permitted to act and throw the-clutches intoengagement with the drive-pulley the hub b will be rocked in a directionto-release the strap or hand brake L from the brake-Wheel, permittingthe shaft B to turn freely. On the other hand, whenever the sleeve K isslid into position to engage the dog I, and thereby rock the huh I) bythe engagement of the dog with the arm b on the hub, the band or strapbrake will be caused to promptly hug the periphery of the brake-wheeland promptlystop the rotary movement of the shaft B.

The escapement-operating rod D, hereinabove referred to, is connectedwith the escapement-rod N by means of a crank-arm 'n. The escapement-rodN is essentially a rock shaft mounted in suitable bearings underneaththe feed-table and carries an escapement mechanism comprising dogsconstructed and arranged to engage successive teeth 0 on the rack-bar Oto permit the feed table or carriage to be drawn rearwardly by anactuating-springon a drum P, the drum being connected with the carriageby a cord 19. The particular structure of the escapement mechanism isfully set forth and claimed in the patent hereinbefore referred to andis briefly referred to here only for the purpose of showing theconnection therewith of the improved operating-rod D.

As heretofore constructed the laterallyvi'brating dogs carried by theshaft N for engaging the teeth oon the rack-bar, have from one cause oranother caught the teeth 0 instead of sliding between two successiveteeth, and the positive movement of the rod D has caused the breaking ofthe dog or some part of the mechanism which refused to yield as the rodwas positively reciprocated by the drive-shaft B.

I provide against liability of breakage as follows: The rod D has a freesliding movement in an elongated bearing d, pivoted to the crank-arm n,and also in bearings d d connected with the eccentric-strap whichembraces the eccentric b The said rod D has further fixed to it a collar61 below the bearing (1 and a collar 61 below the bearing d Coil-springsQ Q connect the bearing 01 with the collar (1 on the rod and the bearingd with the collar d" on the rod, respectively, and the tension of thesesprings is relied upon to operate the rock-shaft N and throw the dogsinto and out of engagement with the teeth on the rack-bar when the partsare working in perfect order; but when for any cause one of theescapement-dogs happens to engage the end of a tooth 0 instead ofentering the space between two consecutive teeth the operatingrod D willbe allowed to move laterally under the positive motion of thedrive-shaft B, the spring Q or Q, as the case may be, yielding to permitthe rod D to move without endangering the integrity of the tooth or thedog.

To bring the punch-keys R on the front of the punch-head, which areintended to control the punches for punching the peg and lace holes inthe card, within convenient reach of the operator, while the fingers ofthe hand are manipulating the keys R on the opposite side of the punchhead and which keys control the punches for punching the pattern-holesin the card, I provide a lateral,

the middle key R audits free end carried into such position withrelation to the two keys to the right of it as the drawing is held thatthe thumb of the right hand of the operator may cover the two keys andthe end of the extension 1', which controls the third key, while thethumb of the left hand of the operator readily controls the other twokeys at the left of the center.

The foregoing matter, relating to the means for preventing thefeed-driving mechanism from causing injury to the escapement when thelatter fails to register and for relieving the strain upon the hand ofthe operator in manipulating the punch-keys, is not claimed in thepresent application, but forms the subject-matter of a divisionalapplication, Serial No. 38,624, filed December 4, 1900.

What I claim is 1. The combination with the drive-pulley anddrive-shaft, the former being free to rotate relatively to the latter,of clutch-shoes arranged to engage the drive-pulley, aspringactuated hubmounted on the drive-shaft for locking and releasing the clutch-shoes, abrake under the control of said rocking hub to be set and released andmeans under the control of the operator for causing the said hub to rockin a direction to release the brakeshoes and set the brake,substantially as set forth.

2. The combination with the drive-pulley and drive-shaft, the formerbeing free to rotate relatively to the latter, of a clutch arranged toengage the drive-pulley, a springactuated hub mounted on the drive-shaftfor locking and releasing the clutch, a brake under the control of saidhub to be set and released, hub-controlling means and a pair of pedalsfor positively operating the hub-controlling means to set the clutch andrelease the brake and to release the clutch and set the brake,substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two Witnesses, this 18th day of October, 1899.

VERNON BOYLE.

Witnesses:

FREDK. HAYNES, C. S. SUNDGREN.

extension 0, which may be fixed to the end of 1

